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Journal of Advances in Environmental Health Research، جلد ۳، شماره ۴، صفحات ۲۶۶-۰
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عنوان انگلیسی Preparation of magnetic chitosan/Fe-Zr nanoparticles for the removal of heavy metals from aqueous solution
چکیده انگلیسی مقاله Copper and hexavalent chromium are heavy metals that are harmful to human health. Natural adsorbent chitosan, due to its considerable properties such as the presence of functional groups of –NH 2 and -OH, non-toxicity, low cost, and biocompatibility, has gained much attention in pollutant removal. Therefore, in the present study, adsorption of chromium (VI) and copper (II) ions was conducted in a batch system using magnetic chitosan/Fe-Zr nanoparticles. In addition, the effect of different variables such as contact time, pH, adsorbent dose, initial concentration of heavy metals, and temperature were investigated. The results of the present study indicated that the highest efficiency in removal of chromium (VI) and copper (II) in pH of 4 were 99.52% and 97.72%, respectively. Moreover, adding 0.4 g of the composite at concentration of 5 mg/l can result in up to 97.43% removal of copper (II) and adding 1 g of this composite at the same concentration can result in more than 91% removal of chromium (VI). In addition, it was concluded that increasing the density of the heavy metals did not have a remarkable effect on the removal efficiency. The equilibrium related to adsorbent capacity and the amounts of nanoparticles were obtained using the plots of Langmuir and Freundlich adsorption isotherms for chromium (VI) and copper (II), respectively. The studied adsorbent had a high level of efficiency in the removal of heavy metals from aqueous solutions.
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نویسندگان مقاله مریم خدادادی | maryam khodadadi
department of environmental health engineering, international campus, shahid sadoughi university of medical sciences, yazd, iran


محمد حسن احرامپوش | mohammad hassan ehrampoush
environmental sciences and technology research center and department of environmental health engineering, shahid sadoughi university of medical sciences, yazd, iran


امیر حسین محوی | amir hossein mahvi
department of environmental health engineering, school of public health, tehran university of medical sciences, tehran, iran

سازمان اصلی تایید شده: دانشگاه علوم پزشکی تهران (Tehran university of medical sciences)

حدیقه دری | hadigheh dorri
department of environmental health engineering, school of public health, birjand university of medical sciences, birjand, iran

سازمان اصلی تایید شده: دانشگاه علوم پزشکی بیرجند (Birjand university of medical sciences)

لیدا رفعتی | lida rafati
environmental sciences and technology research center and department of environmental health engineering, shahid sadoughi university of medical sciences, yazd, iran


علی نقی زاده | ali naghizadeh
department of environmental health engineering, school of health, birjand university of medical sciences, birjand, iran

سازمان اصلی تایید شده: دانشگاه علوم پزشکی بیرجند (Birjand university of medical sciences)

نشانی اینترنتی http://jaehr.muk.ac.ir/index.php/jaehr/article/view/250
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زبان مقاله منتشر شده en
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